TY - RPRT TI - Hydrogeology, water quality, and potential for contamination of the Upper Floridan aquifer in the Silver Springs ground-water basin, central Marion County, Florida AU - G. G. Phelps PY - 1994 DO - 10.3133/wri924159 UR - https://pubs.usgs.gov/publication/wri924159 ID - wri924159 ER -